Automatic control mechanism for rolling-mill equipment



April 15 1924. 1,490,436

P. A. SCHULZ AUTOMATIC CONTROL MECHANISM FOR ROLLING MILL EQUIPMENT Filed May 25,; 1921 3 sheets-Sheet 1 April 15 1924. 1,490,436

P. A. SCHULZ AUTOMATIC CONTROL MECHANISM FOR ROLLING MILL EQUIPMENT Filed May 23. 1921 3 Sheets-Sheet 2 April 15 1924. Y 1,490,436

P. A. SCHULZ AUTOMATIC CGNTROL MECHANISM FOR ROLLING MILL EQUIPMENT F'iled May 23,1921 SSheets-Sheet n I I I l I l I I l I l I I I I I I I I I I firm/or Patented Apr. 15, 1924.

, UNITED STATES PATENT OFFICE.

PAUL AUGUST SGHULZ, OF BETHLEHEM, PENNSYLVANIA, ASSIGNOB TO BETHLEHEM STEEL COMPANY, OF BETHLEHEM, PENNSYLVANIA, A CORPORATION OF PENN- SYLVANIA.

AUTOMATIC CONTROL mnonamsm non ROLLING- MILL EQUIPMENT.

Application flied May 23, 1921. Serial Ho. 471,868;

To all whom it may concern:

Be it known that 1, PAUL Ancos'r SCHULZ,

a citizen of the United States, and a resident of the city of Bethlehem, county of Northampton, State of Pennsylvania, have mvented certain new and useful Improvements in Automatic Control Mechanism for Rolling-Mill Equipment, of which the following is a specification.

This invention relates to mechanism adapted for use in changing the position of theadjustable elements of a rolling mill to bring about a. predetermined but difi'crent operative relation of the cooperating parts or, elements of the mill, as for instance the rela-- tive positions of the rolls for successive passes of the material being treated. It includes indicating mechanism which when properly set to indicate the amount of movement or new position desired for the ele ment with which it is operativcly connected through its moving means, such as the moving means for an adjustable roll, will automatically cut off the power and stop the movement of the element or roll at the point indicated and desired. It is adapted for use with electrically operated moving means, and automatically breaks the current and cuts ofl' the power. \Vhcre there are a series of movements of the roll in the same direction, the total amount of such movements will be indicated as well as the amount of the last movement. The novel features will be more fully understood from the following description and claims taken in connection with the drawings.

In the drawings:

Figure 1 is a side view of the indicating and control mechanism and its stand partly in elevation and partly in section, with the circuit breaker closed ready for operation when current is turned on.

Figure 2 is a plan view of the parts below the section line 22 of Figure 1, the parts being in the same position as Figure 1;

Figure 3 is an enlarged vertical section of the clutch connection in the drive shaft;

Figure 4 is an enlarged view partly in vertical section of the circuit breaking or cut-out mechanism with the circuit breaker in closed position;

Figure'5 is an enlarged side view of the end of the arm which operates the circuit breaker carrying its pivoted cam;

Figure 6 is a side view of the circuit breaker mechanism and adjacent cooperating parts when the circuit breaker has been brought to open position; and- Figure 7 IS a side diagrammatic view showing the operative connection between the automatic control mechanism and a rolling mill and its movin mechanism.

t is well known in the art that in operating rolling mills and similar devices 'it is often necessary to move or change the adjustment relatively to each other of the rolls, guides and other parts, and that the source of power for the-purpose is usually an electric motor. Referrin first to Figure 7 showing the o erative re ation' and connection between t e indicating and controlling mechanism and the thing that is to be controlled by it, 10 is an ordinary rolling mill having a lower fixed roll and an upper vertically adjustable roll 11. The ad ustable roll 11 is moved up or down, varyin the distance between it and the lower rol by well known screw mechanism 12 driven by the electric motor 13, the drive connection consisting in the shaft 14 having gear con-' nection 15 with the motor and gear connection 16 with the screw mechanism 12. The shaft 14 also has gear connection for driving the laterally extending shaft 17 which is operatively connected at its other end to a part of the control mechanism 18 mounted on a. suitable separate support The switch 19 for making the electrical connection for operating the motor is preferabl located near the control mechanism and t e circuit passes through parts of said control mechanism as hereinafter described, and is there provided with an-automatic make and break mechanism.

The indicating and controlling mechanism is mounted on a suitable stand 20, Fig. 1, which has below its upper end a shelf 21 from which the main operating parts are supported and at its top has an arm '22 extending out over the shelf and having near its end a vertical bearing bracket 23 for a vertical downwardly extending driving spindle 24. The shaft 17 which is driven by the roll moving mechanism as shown in Fig. 7 is mounted in a bearing bracket 25 secured in place on stand 20, and has an extension, making Worm gear connection with spindle 24 in the housing 26 mounted on the end of 'termined point below the end of said spindle, an ang e, eac

arm 22, whereby the spindle will be driven brought to the desired relative position anby the shaft. Mounted on the shelf 21 there gularly or rotatively and is there secured is an externally screw threaded supporting against further rotary movement. For this member 27 which is axially in lme with purpose it has at one end two arms 44 and spindle 24 and extendsupwardly to a prede- 45 (Fi 2) projecting on opposite sides at 1 having a bolt lole in its end and which has a lateral flange 28 at its base, through either of which the downwardly exthrough which it is rigidly secured to shelf tending bolt 46 may pass. Below these arms 21 by bolts. This screw threaded member the elevated portion 4? (Fi 1) on the shelf has a cylindrical socket 29 extending centre-l 21 of the support is provided with parallel ly down therein from the top to a point near -.T-slots 48, 49 (Fi 2) and a slotted flat strip the bottom. A drive spindle 30 fits in socket is secured to t e fixed frame or support 29 at its lower end and is adapted to turn throu h T bolt connection through its-slot therein and extends at its upper end to a and e slots 48, 49. The lower end of bolt point slightly below the lower end of spindle 46 passes through an opening in the end of 24, and has secured in fixed positions, clutch strip 50 thus permitting that. bolt with arm member 31 having upwardly projectin en- 43 to move upand down but holding them gaging teeth. A vertically movable c utch against rotation. It will be noted that this member 32 is keyed to the lower end of arrangement gives considerable latitude for spindle 24 against relative rotation bv the adjustment since the connection may be key 33 fitting ina vertical groove and has at made to either arm. its lower end downwardly extending teeth Ri 'dly secured to the under side of the matching those on member'3 1. The clutch switc arm 43 on the opposite end from member 32 is held in its up er inoperative arms 44 and 45 there is a transversely exposition by the spring pressed hand operated tending bar 51 (Fig. 2) formed of insulatlocking bolt 34 passing radially through it. ing material and carrying at its ends the and entering a socket 35 in spindle 24 (sec downwardly inclined contact brushes 52 Fig. 3}. It will be understood that when and 53 which are out of contact with each the b0 1: is in the socket, clutch member 32 other. These' brushes are interposed in the will be held in its upper position out ofenelectric circuit supplying motor 13, one end gagement with member 31, but when the bolt of the circuit wire 54 bein connected to is pulled against the tension of its spring out brush 52' and the other en to brush 53. of the socket the clutch member 32 will more These brushes make contact, at their lower down by gravity into engagement with memends with the upper surface of a disk 55 of her 31, thus connecting spindles 24 and 30 conducting material. when that disk is in its to rotate together. Below the clutch member upper position thus completing the circuit, 31 there is an enlarged drum 36 having a cenbut, as will be explained, when the disk 55 tral bore so fitting spindle 30 as to permit moves downward the brushes cannot follow vertical movement thereon, but held against and the current is broken and the motor relative rotary movement by key 37 (see Fig. disabled. The purpose in thus providing 2). This drum has a downwardly extending in a sense two breaks or gaps in the circuit sleeve 38 with an enlarged internally t-hi'e'adis to reduce sparkin The disk 55 is mounted bore fitting and engaging, through the ed on the lower on of a vertically movable screw threads, the stationary screw threaded rod 56 but is insulated therefrom b the member 27, and it also has an upwardly exsleeve 57 and disk 58 of suitable insu ating tending sleeve 39 with a bore fitting spindle material. The rod 56 has a washer 59 serv- 30 and its key 37. Relatively surrounding ing as an abutment for sleeve 57 against the flanged base 28 of screw threaded memwhich it is pressed by the actionof nut 60 her 27 is a member 40 having an interior cirand its washer, and the rod has an enlarged cular flange 41 at its lower edge fitting under portion 61 above the flange 59 tittin upan external flange of the base, and this memwardly in the lower end of a cylindrical ber 40 carries the pointer or indicator 42 vertical'socket 62 in the end of arm 43. A which extends upwardly close to the outer reduced section of the rod 56 passes up surface of drum 36 to serve as an indicator throu h the central small opening 63 at the in connection with data carried on said drum top 0? the socket and has at its upper end a as will be explained later. materially enlarged cylindrical portion 64 The circuit breaker proper is carried by :1. having a marginal flange 65 at its top. 1 switch arm 43 which is mounted on sleeve 38 coil spring 82 may be placed in socket 62 immediately below the drum'36 in a bearing bearing down on the upper end of the engroove formed by parallel projecting shoullarged portion 61 to aid gravity in tending ders on said sleeve so as to permit relative to move rod 56 and the contact disk 55 downturning movement and to cause it to more ward away from the contact brushes 52 and up and down axially with the drum. In 53. The rod 56 and contact disk 55 are northe automatic operation. this switch arm' mally held in the upper or closed circuit does not however turn with the drum but is position by the swinging arm 66 pivoted at 67 to the upper portion of arm 43 at its extreme end and extendin upwardly therefrom substantially para el to rod 56 but provided near its up or end with a lateral 6 projection .68 exten ing towards the line of rod 56 with a horizontal u er surface catching under the flange 65 o t e rod and thus sutpporting it. It will be noted that the face the projection 68 is onan incline from its topdownwardly so that the flange 65 may in rising to the position shown in Figure 4 automatically turn the arm 66 'on its pivot by a wedging action sufliciently to permit the flange to pass to a point above the lug. The arm 66 has an extension 69 l below pivot 67 and'a coil s in% 70 is interposed etween that end and a xed part of arm 43 thus tending to turn arm 66 on its -pivot moving its upper end and catch in towards rod 56 (see 1g. 2) It will be noted from what has been'said that if the arm 66 V is moved outward a suflicient distance to release flan 65 from catch 68, the rod 56 and contact disk 55 will automaticallymove downward thus breaking the circuit. The

means for moving arm 66 outwardly automatically and with proper timing includes.

what may be called a trip arm or.knockout rotary member mounted to turn on sleeve 39 above the drum through a bearing mem- 'ber 71 and to move vertically with the drum. It includes the trip or cam arm 72 for effooting the movement of arm- 66 and handle arm 73 for manual movement and setting rigidly connected to ether and pivoted for vertical turning at 4 to a In 75- on the bearing member 71.. In operation they are supported by and lie immediately across the upper edge oi drum 36. The cam arm 72 has pivoted to a projection on its top near its end at 76 a cam 77 which may be turnedto u right or inoperativetposition shown in igure 5, or to a horizontal POSltlOH" restin on the end ledge 78 with its Vshaped en rojectin beyond. This cam arm extends beyond tie mar 'n of the drum 36 sufiiciently to cause t e cams V-shaped inclined surface when horizontally rotated past arm 66 to enga e that portionof release arm 66 which is a ve sup orting1 lug 68 and move it outwardly a su cient istanee to release supporting flange 65 and break the circu t. In this operation the cam is of course in horizontal position as illustrated in'Figure 2. The drum 36'has at its upper outer margin a series of equally spaced radlal V- shaped notches 84 and the handle arm 73 has secured to its under surface above Y said notches an engaging and centeringprojecting niember or tooth 79 whiehhas an engaging edge V-shaped in cross section fitting in one of said notches and supporting the arms. It will be understood that cam arms 72 and 73 may be turned upward by hand on pivot 74 carrying the tooth 79 out of the notch, and permitting those arms to be turned on sleeve 39 as an axisinto any ad- 'usted position, but that so long as it rests y gravity with the teeth engaging a notch it will be turned by drum 36. The cam arm 72 has a part projecting downw'ardl over the margin of the drum for somedistance with a hook 80 at its end adapted to engage the undersurface of flange and lift it androd 56 as the arm is turned upward by hand on pivot 74. Of course this does not happen except when rod 56 is in lowered position and the cam arm and the hook are in position at and in line with the rod, as wouldbethe case when the cam by moving arm 66 eflected the breaking of the circuit and stopping of the apparatus.

As hereto ore state the drum 36 carries on its surface certain characters and markings which constitute data which enables the operator to set the device to indicate and automatically bring about the desired operation, and their nature will be best understood -by first considering the movements of the partsin operation. \Vhen the clutch mechanism 31, 32, is in engagei'nent and the motor 1s 0 crating to turn the shaft to move the roll, t e drum 36 will'turn simultaneously and at a peripheral speed having a definite ratio to the movement of the roll determined by the nature of the gear connection. Vertical lines 81 are placed on the surface of the drum spaced apart the rightdistance to indicate the peripheral movement ofthe drum which will take place in the particular apparatus ona definite and known movement of there, and the data relatin to that is placed on the spiral line 83 at the vertical lines. Any desired unit of measurement' may be adopted to ive sufficiently fine adjustment in fixing t e movement and the data may proceed progressively from a fixed starting point at the bottom around the drum onthe spiral line several times. The line for the data is made spiral so that it will be followed in successive adjustments and operations by the pointed end of the indicator 42 durin the downwardmovementof the drum 36 due to its turning in screw threaded engagement with the fixed member 27, and the inclination of the spiral is made to correspond with that down movement. It will be noted that the indicator 42 does not move up and down or rotatively with drum 36 but maintains a fixed position until reset. The vertical and rotary movement of the drum is what makes its point follow the spiral line.

In using the device the operator Wlll set the parts in such position or relation that the data on the drum indicating. the known and desired position of the roll will be at the point where the device if operating would break the circuit and prevent movement, and this can be easily done because the arm rotatively engaging it with the. drum desired position' of the roll for the next pass lifts the cam'andhandle arms 72 and 73 on the pivot; 74 and turnsthei'n onsleeve 39 until. the tooth 79 on 'thejbottom 36 w s: he m ti a l i l n cated by the pointer 42 and. then lowers-the by the tooth and slot. It will be noted that there is a slot. foreach .vertical-lineand each. line leads t'ofthe central vertical-plane oefI the glgt. clutc man be fizliqthgg r ease y pun: ioutwar co n and it automaticafiy completesatlije.d

ber 31. When the passagegoff tlieflarticles through the r'ollsis'completedland itfis'de position'of the roll and therotaig sired to bring the. rolls into osit'ion for theqi'ei't pass, current is'turne on to'mo-' tor 13 through switch 19 and the change of movement of the drum take place. The rum moves 'in a. direction-which carries the cam arm around until at the finish of the indicated movement its cam strikes the upfer endvof arm GB-moving it outward an releasing rod 56 and breaking-the electrical connec tion and stopping the movement of the parts with the rolls ready for the next operation.

The switch 19 is then turned torinalicanother break in thecircuit before-resetting the mechanism for the next change in the position of the rolls.- .To then bring'the rolls still closer together for another pass it is merely necessary topiace the indicator 42 at the desired'mark and lift the cam arms on its pivot 74 and move it circumferentially until the tooth 79 enters the indicated slot. During the up movement the book engages flange 65 and carries it up over the automatic catch 68 which serves to hold rod 56 and disk 55 in position to complete the circuit through brushes 52 and 53 and disk 55.

When'the articles being treated have been sub'ected to the number of rcducin passes desired and it is desired to return he movable roll to its original position and the action of the motor isreversed for that purpose, the automatic indicating and controlling means may also be returned to original position through the action of the motor. To this" end the cam 7'! is turned up into its inoperative position shown in Fig. 5 where it will not strike arm 66 in passing, and the clutch being engaged and the auto-V maticcurrcntbreakerclosed, the drum 36 and parts movnhlewith it will through the e ual total reverse riiovement return to original osition. While pointer 1:2 and the engag of arm 73, is directly over theslotjinfdrnm rivingconnection by interlocking with'clutch memin tooth '9 on the hand 0 am 73 .are not inthe same. vertical g d i afl plane as are angular-1y removed therefrpingtliis fact s takenjinto consideration in. applyingthe .nm tofthefdrum.

Having *1 thus described the' invention; what is 'cliiiniedas new and ides! 1s'ecured..-b v igetter sj Patent'isii", In'la} cvicc =of --'the classldesa'ibed ior controllingij andindicating'the zamiee'sswe operative iiiovcinentsbfmn 'electrically driven mechanism; the 'pombinationwith indieating. and controllmg member adapted to so connected to, said meclianismy-asl to n ent passes fa-lfixedzpoint and indicating the corresponding movcme'nt'of'said mechanism, re -manna v negar-wi m mgftheclrcuitffwhiclii'drivi-s the mechanism near said controllingjmem and a trippingdcvicegmovalile along sai controlling n1 her adapted-ion detachable. connection 7 th with'at any point, which tripping device whenconnected to and moving with said memher:past said will cause said switchftoflautomatically' break the circult andstop the mechanism. A

2. In a deviceL gfi-the-class described for controlling and indicating the successive operative movements of an electrically driven mechanism, the combination with an indicating and. controlling member 'adapted to be so connected to said-mechanism asto be driven thereby and move therewith in a fixed relation having therconsuccessive data arranged on a 'line which during movemcnt passes a fined point and indicating the corresponding movement of said mechanism, an automatic switch for making and breaking the circ|.lit which drives the mechanism nearsaid controlling member, a. trip- ,ping device movable along said'controlling member adapted for detachable connection therewith at any point, which tripping device when connected to and moving with said member past said switch will cause said switch to automatically break the circuit and stop the mechanism, and a ointcd in- ,dicator freely movable along said controlling membenadaptedto be set by reference to the data thereon at the point thereon which will cause said tripping device to-opelate ,the switch after a predetermined movement. 7

' 3; In a device of the class described for controlling and indicating the successive operative movements of an electricallydriven incchnnism,'the combination with an indicating and controlling member adapted to be so connected to said mechanism as to be driven thereby and move therewith in a fixed relation having thereon successive data arranged on a. line which during movement passes a fixed point and indicating the corresponding movement of said mechanism, an automatic switch for making and breaking the circuit which drives the mechanism near said controlling member, and a tripping device movable: ong said controlling member adapted for detachable connection therewith at any point, which tripping device when connected to and moving with said member past said switch will cause said switch to automatically break the circuit and stop the mechanism, said tripping member having a part which will in trip ing position engage a part of the switc mechanism and move the switch to closed position when said tripping mechanism is so moved as to disconnect it from the controlling member.

g. In a device of the. class described for controlling and indicating the successive operative movements of an electrically driven mechanism, the combination with a rotary drum adapted to be so connected to said mechanism as to be driven thereby and more simultaneously therewith in fixed relation having thereon successive data indicating corresponding movement of said mechanism, an automatic switch for making and break ing the circuit which drives said mechanism,

adjustable means adapted to be carried by said drum at any selected point around its periphery determined from said data to automatically cause the operation of said switch and the breaking of the circuit on the predetermined movement of the drum.

5. The combination with a machine havin a part movable to different adjusted positions within limits for difi'erent operations means for movin it including an electric motor, a controlling mechanism for fixing and limiting the amount of movement imparted by the moving means when set in operation including a mechanical drive conuectionwith the moving means, a make and break contact switch in the circuit of said motor, a rotary trip arm drivenjbrough said drive connection adapted at one point of its rotation to cause the opening of said switch to break the circuit and stop the motor,- means for manually releasingsaid trip arm from its driving means and moving.

it to a predetermined angular position with reference to the point where it causes the break and .there re-engaging it Wltll the driving means whereby the circuit will be automatically broken and the movement of the part stopped on the movement of said arm through said predetermmed'angle.

6. The combination with a machine having a part movable to different adjusted positions within limits for difi'erent opera- 'tions, means for moving it including an electric motor, a controlling mechanism for fixing and limiting the amount of movement imparted by the moving means when set in said -drive connection adapted at one point of its rotation to cause the opening of said switch to break the circuit and stop the motor, means for manually releasin said trip arm fromits drivin means an mov ing it to-a predetermine angular position with reference to the point where it causes the break 'and there re-en aging it with the driving meanswhereby tie circuit will be automatically broken and the movement of the partstopped on the movement of the said arm through said predetermined angle data on the driving means adjacent said trip arm for indicating the amount of movement which will be given said movable art during the movement of said trip arm. rom an selected po nt where it causes the breakin the circult.

7. The combination with :imachine'havin a part movable to different adjusted positions within limits for different operations, means for moving it including-an electric motor, a controlling mechanism for fixing and limiting the amount of movement imparted by the moving means when set in operation including a mechanical drive connection with the moving means, a make and break contact switch in the circuit of said motor, a rotary drum driven by said connection having vertical lines thereon successively marked to indicate what movement will be given said movab e part durin the movement of'any selected number of lines on and with the drum past a fixed point, a rotary trip arm with the same center 0 rotation as the drum adapted to be rota- 'tively moved freely to a desired position in reference to the drum chosen from the data on the drum and there opcratively connected to the drive means through the drum so as to rotate with the drum, and a control arm for the switch in the path of the said trip arm whereby it willbe struck and operated by said switch-arm in its rotary movement to cause the breaking of the switch contact -and the stopping of the motor.

8. In a device of the "class described the combination with a machine having a part movable and adjustable within limits to different positions for successive operations of the machine, electrically operated means for moving said part independently of the means for operatin or running the properly adjusted mac ine,- and controlling means driven by said moving means and in cluding adjustable setting and indicating mechanism for automatically breaking the electric circuit which supplies the power operated means at a predetermined limit 0*! movement of said part indicated by said fluence of trollin means comprising a .drum having indicating data thereon and connected to concentrically rotate with a shaft having releasable clutch connection to said drive 'means for adjustment, a make and break switch for the motor current adjacent said drum, adjustable control means for said switch extending up beyond the margin of the drum held when adjusted against rotation, and a trip arm rotatively mounted concentric with and with reference to but above said drum extending out beyond the margin 7 of the drum and hinged for manual elevation but in operative position adapted to rest by gravity on the top portion of said drum, the meetin surfaces under the inavity eing such as to cause it to rotate with the drum, and its outer portion being so shaped and positioned that it will trip said control mechanismfor the switch when it. is reached in the rotation and break the: circuit. thus stoppin the motor.

'9. In a device of the class escribed the combination with a machine having a part movable and adjustable within limits to different positions for successive operations of the machine, electrically operated means for moving said part independently of the means for operating or running the prop erly adjusted machine, and controlling means driven by said moving means and including adjustable setting and indicating mechanism for automatically breaking the electric current which supplies the power operated means at a predetermined limit of movement of said part indicated by said.

setting means, the said indicating and controllin means comprising a drum having indicating data thereon and connected to concentrically rotate with a shaft having releasable clutch connection to said drive means for adjustment, a make and break switch for the motor current adjacent said drum; adjustable control means for said switch extending up beyond'the margin of the drum held when adjusted against rotation, and a trip arm rotatively mounted concentric with and with reference to but above said drum extending out beyond the margin of the drum and hinged for manual elevation but in operative position adapted to rest by gravity on the top portion of said drum, the meetin surfaces under the infiuence of gravity" ing such as to cause it to rotate with the drum and its outer portion being so shaped and positioned that it will trip said control mechanism for the switch when it is reached in the rotation and break the circuit thus stopping the motor,-a-nd having a projecting part which will on lifting said arm from the drum forresetting, reset the switch and close the gap in the current.

10. In a device of the class described for controlling and indicating the successive operative movements of an electrically driven mechanism,- the combination with an indicatingand controlling member adapted to be so connected to said mechanism as to be driven thereby and move therewith in a fixed relation having thereon successive data arranged on a line which during movement passes a fixed point and indicating the corresponding movement of said mechanism, an automatic switch for making and breaking the circuit which drives the mechanism. a movable tripping device adapted in one position of movement to cause the operation of the switch to break the circuit, means for freely movingsaid tripping device to any selected distance in its path of movement fromits position when operating the Switch fixed by the indications on said controlling member and releasable means for there bringing-it into such connection with the drive means as to cause it to move to positionto operate the switch simultaneousl with a corresponding movement. of the ind! eating member.

11. In a'device of the class described for position of movement to cause the operation of the switch to break the circuit, means for freely moving'said tripping device to any selected distance in its path of movement from its position. when operating the switch fixed by the indicators on said controlling member and releasable means for there bringing it into' such connection with the drive means as to cause it to moveto position to operate the switch simultaneously with a eorres onding movement of the indicating mem ier, an adjustable indicator disconnected from the moving means for pointing to the selected point on said indicating member determining the limit of the desired movement and the setting of the tripping device.

. 12. In a device of the class described for controlling and indicating the successive operative movements of an electrically driven mechanism, the combination with ,an indicating and controlling member adapted to be soconnected to said mechanism as to be driven thereby and move therewith in a fixed relation having thereon successive data predetermined movement arranged on a line which during movement passes a fixed point. and indicating the corresponding movement of said mechanism. an automatic switch for making and breaking the circuit which drives the mechanism, means for adjusting the relation of said switch mechanism and indicating mechanism, and adjustable means adapted to be set by the data on said indicating member to automatically cause the operation of the switch and the breaking of the circuit on a of said controlling member.

13. .In a device of the class described for controlling the operation of an electrically driven mechanism the combination of arotary spindle driven by said mechanism, a' second spindle in line with said first spindle and having releasable clutch connection therewith. a drum having indicating data thereon and a symmetrically arranged series of radial grooves around the to splined to said second spindle to rotate herewith but movable longitudinally thereof, a stationarysupport for said drum having screw threaded engagement therewith causing longitudinal movement on rotation. a switch arm pivoted for turning concentric with but below said drum and connected therewith to move longitudinallyof the spindle to-' gether carrying spaced contact elements connected in series inthe circuit. which supplies the curren't for the operating mechanism, a movable contact member engaged by said contact elements to close the circuit. means tending to move said member out of contact with said elements and a movable switch controlling part extending upwardly beyond the margin of the drum adapted in one position to hold said member in contact with said elements but to release it when moved to another position. means for rotativcly adjusting said switch arm in reference to said drum and for securing it when in adjusted position against further rotation, while permitting longitudinal movement with the drum, a trip arm extending outwardly over and adapted to rest on the top of said drum rotatable on an axis concentric with that of the drum, but having a pivot connection between its ends permitting lifting the outer end out of contact with the drum and having a projection or tooth on its lower surface so shaped as to enter for rotary engagement any one of the radial grooves in the top of the drum, and having a projecting part or cam portion adapted at one point of its rotation to strike and move said switch controlling part to release po- 'sition thus causing a break in the electric power circuit.

14. In a device of the class described for controlling the operation of an electrically driven mechanism the combination of a rotary spindle driven by said mechanism, a

second spindle in line with said first spindle and having releasable clutch connection -movable contact member engaged by said contact elements to close the circuit, means tending to move said. member out of contact with said elements and a movable switch controlling part extending upwardly beyond the margin of the'drum adapted in one position to hold said member in contact with said elements but to release it when moved to another position, means for rotatively adjusting said switch arm in reference to said drum and for securing it when in adjusted position against further rotation, while permitting longitudinal movement with the drum, a trip arm extending outwardly over and concentric with that of the drum, but having a, pivot connection betweenits ends permitting lifting the outer end out of contact with the drum and having a projection or tooth on its lower surface so shaped as to enter for rotary engagement any one of the radial grooves in the top of the drum, and having a projecting part or cam portion adapted at one point of its rotation to strike and move said switch controlling part. to release position thus causing a break in the electric power circuit, and an indicator freely rotatable on an axis concentric with the drum to adjusted position. but otherwise immovable with its pointed upper end closely adjacent the surface of the drum, the successive data on the drum being on a spiral line at such incline that it will maintain a uniform relation to the end of the pointer on successive revolutions of the drum.

15. In a device of the class described for controlling and indicating the successive operative movements of an electrically driven mechanism. the combination with a rotary drum adapted to he so connected to said mechanism as to be driven thereby and move simultaneously therewith in fixed relation having thereon successive data indicating corresponding movement of said mechanism, an automatic switch for making and breaking the circuit which drives said mechanism, adjustable means adapted to be carried by said drum at any selected point around its periphery determined from said his cuit on the predetermined drum. and a pointed indicator separately data, to automatically cause the operation of said switch and the breaking of't-he-cirmovement of the movable around said drum to indicate the point on said drum at which the means for operating the switch should be carried.

16. In a device of the class described for cont-rolling the operation of an electrically driven mechanism, the combination of a rotary spindle driven by said mechanism. a second Spindle in line with said first spindle and having releasable clutch connection therewith, a drum having indicating data thereon splined to said second 5 indle to rotate therewith but movable longitudinally p thereof, a stationary support for said drum having screw threaded engagement therewith causing longitudinal movement on rotation, a switch arm pivoted for turning concentric with but independently of said drum and so connected therewith to move longitudinally of the spindle together carrying at its outer end near the outer surface of said drum. :1. make and break switch in the circuit which supplies the current for the operating mechanism, a trip arm extending outwardly over said drum rotatable on an axis concentric with that of the drum, but independently thereof, its outer end portion being movable vertically into and out of contact with the top of the drum,

the contacting surfaces being adapted to p her, comprismg intercngage for rotation together, the said trip arm being adapted at one point of its rotation to strike and move said switch controlling part to release position thus causing a break in thc'electric power circuit.

17. In a device of the class described for controlling the operation of an electrically driven mechanism. the combination of a rotary 5 indie driven by said mechanism, a secon spindle in line with said first spindle and having releasable clutch conncction therewith, a drum having indicating data. thereon splined to sald second spindle to rotate therewith but movable longitudinally thereof, a stationary support for said drum having screw threaded engagement therewith causing longitudinal movement on rotation, a switch arm pivoted for turning concentric with but independently of said drum and so connected therewith to move longitudinally of the spindle together carrying at its outer end near the outer surfaces of said drum, 9.

make and break switch in the circuit which contact with the top of the drum, the contacting surfaces being adapted to interenga for rotation, together, the said trip arm .ing adapted atone pointof its rotation to strike and move said switch control ling part to release position thus causing a. break in the electric power circuit, and an indicator freely rotatable on a fixed suport concentric with the drum with a pointed and closely ada-jcent the outer surface of the drum pointingato data thereon. 18. In a device of the 0 ss described for controlling and indicating the successive operative movements of an electrical};

driven mechanism, the combination wi an indicating and controlling -member (1 mechaadapted to be so connected to sai nism as to be driven thereby and move therewith in a fixed relation having thereon successive data am on a line which during movement and indicating the corresponding movement of said. :meehanism, an automatic passes a fixed point switch for making and breaking the cir-, V

cuit which drives the mechanism near the nth of movement of said controllin memspaced contact e ements connected in series in the circuit which supplies the current for the operating mechanism, a movable contact member engaged by said contact elements to close the circuit, means tending to move said member out of contact with said elements and a movable switch controlling part extending upwardly by the controlling member adaptcd in one position to hold said member in contact with said elements but to release it when moved to another position, and an adjustable trip carried by said controlling member at a predetermined position adapted at one point of its movement with said member to strike and move said switch controlling part to release position thus causing a break in the electric power circuit.

In testimony whereof I hereunto aflix my signature. 

